John,
I completely understand your concern. I've read about those scams also. BTW , I do not think you are being harsh.

I do have a day job as a fuel injection engineer so I do not need the money. I've been on twinturbo.net for 4 years. With over 5,000 members, I've helped (virtually and physically) or done business with quite a few of them. Like I said, I initially researched and started the group buy to help myself and a couple of fellow Z'ers to get their units relatively inexpensively. :-)

Here's my not very good quality picture (I'm in the green sweatshirt)... and no, that's not my Z.
http://www.streetchallenge.com/uploadpix/up/jlc2.jpg